author | Mikael Berthe <mikael@lilotux.net> |
Sun, 11 Oct 2009 15:39:32 +0200 | |
changeset 1599 | dcd5d4c75199 |
parent 1598 | a087125d8fc8 |
permissions | -rw-r--r-- |
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/* |
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* pgp.c -- PGP utility functions |
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* |
1599 | 4 |
* Copyright (C) 2006-2009 Mikael Berthe <mikael@lilotux.net> |
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* Some parts inspired by centericq (impgp.cc) |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or (at |
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* your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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*/ |
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|
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#include <config.h> |
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|
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#ifdef HAVE_GPGME |
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|
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <locale.h> |
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#include <sys/mman.h> |
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#include <glib.h> |
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|
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#include "pgp.h" |
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#include "logprint.h" |
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#define MIN_GPGME_VERSION "1.0.0" |
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|
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static struct gpg_struct |
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{ |
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int enabled; |
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char *private_key; |
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char *passphrase; |
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} gpg; |
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|
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// gpg_init(priv_key, passphrase) |
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// Initialize the GPG sub-systems. This function must be invoked early. |
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// Note: priv_key & passphrase are optional, they can be set later. |
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// This function returns 0 if gpgme is available and initialized; |
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// if not it returns the gpgme error code. |
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int gpg_init(const char *priv_key, const char *passphrase) |
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{ |
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gpgme_error_t err; |
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// Check for version and OpenPGP protocol support. |
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if (!gpgme_check_version(MIN_GPGME_VERSION)) { |
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scr_LogPrint(LPRINT_LOGNORM, |
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"GPGME initialization error: Bad library version"); |
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return -1; |
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} |
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|
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err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP); |
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if (err) { |
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scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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"GPGME initialization error: %s", gpgme_strerror(err)); |
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return err; |
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} |
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|
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// Set the locale information. |
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gpgme_set_locale(NULL, LC_CTYPE, setlocale(LC_CTYPE, NULL)); |
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gpgme_set_locale(NULL, LC_MESSAGES, setlocale(LC_MESSAGES, NULL)); |
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|
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// Store private data. |
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gpg_set_private_key(priv_key); |
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gpg_set_passphrase(passphrase); |
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|
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gpg.enabled = 1; |
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return 0; |
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} |
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// gpg_terminate() |
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// Destroy data and free memory. |
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void gpg_terminate(void) |
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{ |
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gpg.enabled = 0; |
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gpg_set_passphrase(NULL); |
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gpg_set_private_key(NULL); |
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} |
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// gpg_set_passphrase(passphrase) |
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// Set the current passphrase (use NULL to erase it). |
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void gpg_set_passphrase(const char *passphrase) |
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{ |
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// Remove current passphrase |
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if (gpg.passphrase) { |
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ssize_t len = strlen(gpg.passphrase); |
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memset(gpg.passphrase, 0, len); |
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munlock(gpg.passphrase, len); |
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g_free(gpg.passphrase); |
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} |
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if (passphrase) { |
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gpg.passphrase = g_strdup(passphrase); |
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mlock(gpg.passphrase, strlen(gpg.passphrase)); |
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} else { |
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gpg.passphrase = NULL; |
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} |
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} |
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|
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// gpg_set_private_key(keyid) |
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// Set the current private key id (use NULL to unset it). |
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void gpg_set_private_key(const char *priv_keyid) |
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{ |
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g_free(gpg.private_key); |
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if (priv_keyid) |
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gpg.private_key = g_strdup(priv_keyid); |
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else |
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gpg.private_key = NULL; |
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} |
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|
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// strip_header_footer(data) |
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// Remove PGP header & footer from data. |
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// Return a new string, or NULL. |
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124 |
// The string must be freed by the caller with g_free() when no longer needed. |
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125 |
static char *strip_header_footer(const char *data) |
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126 |
{ |
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127 |
char *p, *q; |
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128 |
|
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129 |
if (!data) |
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130 |
return NULL; |
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131 |
|
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132 |
// p: beginning of real data |
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133 |
// q: end of real data |
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134 |
|
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135 |
// Strip header (to the first empty line) |
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136 |
p = strstr(data, "\n\n"); |
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137 |
if (!p) |
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138 |
return g_strdup(data); |
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139 |
|
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140 |
// Strip footer |
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141 |
// We want to remove the last lines, until the line beginning with a '-' |
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142 |
p += 2; |
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143 |
for (q = p ; *q; q++) ; |
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144 |
// (q is at the end of data now) |
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145 |
for (q--; q > p && (*q != '\n' || *(q+1) != '-'); q--) ; |
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146 |
|
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147 |
if (q <= p) |
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148 |
return NULL; // Shouldn't happen... |
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149 |
|
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150 |
return g_strndup(p, q-p); |
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151 |
} |
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152 |
|
1598 | 153 |
// GCC ignores casts to void, thus we need to hack around that |
154 |
static inline void ignore(void*x) {} |
|
155 |
||
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156 |
// passphrase_cb() |
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157 |
// GPGME passphrase callback function. |
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158 |
static gpgme_error_t passphrase_cb(void *hook, const char *uid_hint, |
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159 |
const char *passphrase_info, int prev_was_bad, int fd) |
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160 |
{ |
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161 |
ssize_t len; |
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162 |
|
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163 |
// Abort if we do not have the password. |
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164 |
if (!gpg.passphrase) { |
1598 | 165 |
ignore((void*)write(fd, "\n", 1)); // We have an error anyway, thus it does |
166 |
// not matter if we fail again. |
|
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167 |
return gpg_error(GPG_ERR_CANCELED); |
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168 |
} |
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169 |
|
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170 |
// Write the passphrase to the file descriptor. |
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171 |
len = strlen(gpg.passphrase); |
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172 |
if (write(fd, gpg.passphrase, len) != len) |
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173 |
return gpg_error(GPG_ERR_CANCELED); |
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174 |
if (write(fd, "\n", 1) != 1) |
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175 |
return gpg_error(GPG_ERR_CANCELED); |
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176 |
|
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177 |
return 0; // Success |
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178 |
} |
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179 |
|
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180 |
// gpg_verify(gpg_data, text, *sigsum) |
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181 |
// Verify that gpg_data is a correct signature for text. |
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182 |
// Return the key id (or fingerprint), and set *sigsum to |
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183 |
// the gpgme signature summary value. |
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184 |
// The returned string must be freed with g_free() after use. |
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185 |
char *gpg_verify(const char *gpg_data, const char *text, |
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186 |
gpgme_sigsum_t *sigsum) |
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187 |
{ |
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188 |
gpgme_ctx_t ctx; |
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189 |
gpgme_data_t data_sign, data_text; |
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190 |
char *data; |
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191 |
char *verified_key = NULL; |
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192 |
gpgme_key_t key; |
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193 |
gpgme_error_t err; |
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194 |
const char prefix[] = "-----BEGIN PGP SIGNATURE-----\n\n"; |
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195 |
const char suffix[] = "\n-----END PGP SIGNATURE-----\n"; |
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|
196 |
|
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|
197 |
// Reset the summary. |
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|
198 |
*sigsum = 0; |
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|
199 |
|
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|
200 |
if (!gpg.enabled) |
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|
201 |
return NULL; |
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|
202 |
|
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|
203 |
err = gpgme_new(&ctx); |
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|
204 |
if (err) { |
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205 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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|
206 |
"GPGME error: %s", gpgme_strerror(err)); |
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|
207 |
return NULL; |
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|
208 |
} |
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|
209 |
|
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|
210 |
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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|
211 |
|
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212 |
// Surround the given data with the prefix & suffix |
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|
213 |
data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data)); |
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|
214 |
strcpy(data, prefix); |
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|
215 |
strcat(data, gpg_data); |
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|
216 |
strcat(data, suffix); |
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|
217 |
|
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|
218 |
err = gpgme_data_new_from_mem(&data_sign, data, strlen(data), 0); |
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|
219 |
if (!err) { |
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|
220 |
err = gpgme_data_new_from_mem(&data_text, text, strlen(text), 0); |
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|
221 |
if (!err) { |
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|
222 |
err = gpgme_op_verify(ctx, data_sign, data_text, 0); |
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|
223 |
if (!err) { |
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|
224 |
gpgme_verify_result_t vr = gpgme_op_verify_result(ctx); |
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|
225 |
if (vr && vr->signatures) { |
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|
226 |
char *r = vr->signatures->fpr; |
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|
227 |
// Found the fingerprint. Let's try to get the key id. |
1105
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|
228 |
if (!gpgme_get_key(ctx, r, &key, 0) && key) { |
1041
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|
229 |
r = key->subkeys->keyid; |
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|
230 |
gpgme_key_release(key); |
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|
231 |
} |
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|
232 |
// r is a static variable, let's copy it. |
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|
233 |
verified_key = g_strdup(r); |
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|
234 |
*sigsum = vr->signatures->summary; |
1054
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|
235 |
// For some reason summary could be 0 when status is 0 too, |
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|
236 |
// which means the signature is valid... |
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|
237 |
if (!*sigsum && !vr->signatures->status) |
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|
238 |
*sigsum = GPGME_SIGSUM_GREEN; |
1041
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|
239 |
} |
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|
240 |
} |
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|
241 |
gpgme_data_release(data_text); |
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|
242 |
} |
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|
243 |
gpgme_data_release(data_sign); |
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|
244 |
} |
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|
245 |
if (err) |
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|
246 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
1047
0dc104d51dce
PGP: Better error messages
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diff
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|
247 |
"GPGME verification error: %s", gpgme_strerror(err)); |
1041
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248 |
gpgme_release(ctx); |
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249 |
g_free(data); |
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250 |
return verified_key; |
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251 |
} |
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252 |
|
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253 |
// gpg_sign(gpg_data) |
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254 |
// Return a signature of gpg_data (or NULL). |
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255 |
// The returned string must be freed with g_free() after use. |
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256 |
char *gpg_sign(const char *gpg_data) |
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257 |
{ |
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258 |
gpgme_ctx_t ctx; |
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259 |
gpgme_data_t in, out; |
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260 |
char *p; |
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261 |
char *signed_data = NULL; |
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|
262 |
size_t nread; |
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263 |
gpgme_key_t key; |
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264 |
gpgme_error_t err; |
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265 |
|
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266 |
if (!gpg.enabled || !gpg.private_key) |
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267 |
return NULL; |
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268 |
|
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269 |
err = gpgme_new(&ctx); |
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270 |
if (err) { |
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271 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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272 |
"GPGME error: %s", gpgme_strerror(err)); |
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273 |
return NULL; |
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274 |
} |
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275 |
|
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276 |
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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277 |
gpgme_set_textmode(ctx, 0); |
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278 |
gpgme_set_armor(ctx, 1); |
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|
279 |
|
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280 |
p = getenv("GPG_AGENT_INFO"); |
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281 |
if (!(p && strchr(p, ':'))) |
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282 |
gpgme_set_passphrase_cb(ctx, passphrase_cb, 0); |
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|
283 |
|
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284 |
err = gpgme_get_key(ctx, gpg.private_key, &key, 1); |
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285 |
if (err || !key) { |
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286 |
scr_LogPrint(LPRINT_LOGNORM, "GPGME error: private key not found"); |
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287 |
gpgme_release(ctx); |
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288 |
return NULL; |
1041
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289 |
} |
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290 |
|
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291 |
gpgme_signers_clear(ctx); |
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292 |
gpgme_signers_add(ctx, key); |
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293 |
gpgme_key_release(key); |
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294 |
err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0); |
1041
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|
295 |
if (!err) { |
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296 |
err = gpgme_data_new(&out); |
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|
297 |
if (!err) { |
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298 |
err = gpgme_op_sign(ctx, in, out, GPGME_SIG_MODE_DETACH); |
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|
299 |
if (!err) { |
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300 |
signed_data = gpgme_data_release_and_get_mem(out, &nread); |
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|
301 |
if (signed_data) { |
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302 |
// We need to add a trailing NULL |
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303 |
char *dd = g_strndup(signed_data, nread); |
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|
304 |
free(signed_data); |
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|
305 |
signed_data = strip_header_footer(dd); |
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|
306 |
g_free(dd); |
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|
307 |
} |
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|
308 |
} else { |
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|
309 |
gpgme_data_release(out); |
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|
310 |
} |
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|
311 |
} |
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|
312 |
gpgme_data_release(in); |
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|
313 |
} |
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|
314 |
if (err && err != GPG_ERR_CANCELED) |
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|
315 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
1047
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|
316 |
"GPGME signature error: %s", gpgme_strerror(err)); |
1041
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|
317 |
gpgme_release(ctx); |
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|
318 |
return signed_data; |
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|
319 |
} |
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|
320 |
|
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|
321 |
// gpg_decrypt(gpg_data) |
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|
322 |
// Return decrypted gpg_data (or NULL). |
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|
323 |
// The returned string must be freed with g_free() after use. |
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|
324 |
char *gpg_decrypt(const char *gpg_data) |
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|
325 |
{ |
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|
326 |
gpgme_ctx_t ctx; |
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|
327 |
gpgme_data_t in, out; |
1238
80008fe2a4f2
Re-enable gpg-agent (revert 591d8b35c881)
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diff
changeset
|
328 |
char *p, *data; |
1041
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|
329 |
char *decrypted_data = NULL; |
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|
330 |
size_t nread; |
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|
331 |
gpgme_error_t err; |
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|
332 |
const char prefix[] = "-----BEGIN PGP MESSAGE-----\n\n"; |
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|
333 |
const char suffix[] = "\n-----END PGP MESSAGE-----\n"; |
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|
334 |
|
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|
335 |
if (!gpg.enabled) |
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|
336 |
return NULL; |
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|
337 |
|
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|
338 |
err = gpgme_new(&ctx); |
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|
339 |
if (err) { |
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|
340 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
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|
341 |
"GPGME error: %s", gpgme_strerror(err)); |
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|
342 |
return NULL; |
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|
343 |
} |
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|
344 |
|
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|
345 |
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
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|
346 |
|
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|
347 |
p = getenv("GPG_AGENT_INFO"); |
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|
348 |
if (!(p && strchr(p, ':'))) |
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|
349 |
gpgme_set_passphrase_cb(ctx, passphrase_cb, 0); |
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changeset
|
350 |
|
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|
351 |
// Surround the given data with the prefix & suffix |
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|
352 |
data = g_new(char, sizeof(prefix) + sizeof(suffix) + strlen(gpg_data)); |
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|
353 |
strcpy(data, prefix); |
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|
354 |
strcat(data, gpg_data); |
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|
355 |
strcat(data, suffix); |
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|
356 |
|
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|
357 |
err = gpgme_data_new_from_mem(&in, data, strlen(data), 0); |
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|
358 |
if (!err) { |
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|
359 |
err = gpgme_data_new(&out); |
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Introduce PGP utility functions
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changeset
|
360 |
if (!err) { |
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|
361 |
err = gpgme_op_decrypt(ctx, in, out); |
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diff
changeset
|
362 |
if (!err) { |
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|
363 |
decrypted_data = gpgme_data_release_and_get_mem(out, &nread); |
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|
364 |
if (decrypted_data) { |
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|
365 |
// We need to add a trailing NULL |
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|
366 |
char *dd = g_strndup(decrypted_data, nread); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
367 |
free(decrypted_data); |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
368 |
decrypted_data = dd; |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
369 |
} |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
370 |
} else { |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
371 |
gpgme_data_release(out); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
372 |
} |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
373 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
374 |
gpgme_data_release(in); |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
375 |
} |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
376 |
if (err && err != GPG_ERR_CANCELED) |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
377 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
1047
0dc104d51dce
PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents:
1041
diff
changeset
|
378 |
"GPGME decryption error: %s", gpgme_strerror(err)); |
1041
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
379 |
gpgme_release(ctx); |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
380 |
g_free(data); |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
381 |
return decrypted_data; |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
382 |
} |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
383 |
|
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
384 |
// gpg_encrypt(gpg_data, keyid) |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
385 |
// Return encrypted gpg_data with the key keyid (or NULL). |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
386 |
// The returned string must be freed with g_free() after use. |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
387 |
char *gpg_encrypt(const char *gpg_data, const char *keyid) |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
388 |
{ |
d4b97a2423eb
Introduce PGP utility functions
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parents:
diff
changeset
|
389 |
gpgme_ctx_t ctx; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
390 |
gpgme_data_t in, out; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
391 |
char *encrypted_data = NULL, *edata; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
392 |
size_t nread; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
393 |
gpgme_key_t key; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
394 |
gpgme_error_t err; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
395 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
396 |
if (!gpg.enabled) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
397 |
return NULL; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
398 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
399 |
err = gpgme_new(&ctx); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
400 |
if (err) { |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
401 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
402 |
"GPGME error: %s", gpgme_strerror(err)); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
403 |
return NULL; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
404 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
405 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
406 |
gpgme_set_protocol(ctx, GPGME_PROTOCOL_OpenPGP); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
407 |
gpgme_set_textmode(ctx, 0); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
408 |
gpgme_set_armor(ctx, 1); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
409 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
410 |
err = gpgme_get_key(ctx, keyid, &key, 0); |
1105
265e1d873d3e
PGP: Improve checks for missing keys
Mikael Berthe <mikael@lilotux.net>
parents:
1057
diff
changeset
|
411 |
if (!err && key) { |
1041
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
412 |
gpgme_key_t keys[] = { key, 0 }; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
413 |
err = gpgme_data_new_from_mem(&in, gpg_data, strlen(gpg_data), 0); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
414 |
if (!err) { |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
415 |
err = gpgme_data_new(&out); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
416 |
if (!err) { |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
417 |
err = gpgme_op_encrypt(ctx, keys, GPGME_ENCRYPT_ALWAYS_TRUST, in, out); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
418 |
if (!err) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
419 |
encrypted_data = gpgme_data_release_and_get_mem(out, &nread); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
420 |
else |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
421 |
gpgme_data_release(out); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
422 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
423 |
gpgme_data_release(in); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
424 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
425 |
gpgme_key_release(key); |
1047
0dc104d51dce
PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents:
1041
diff
changeset
|
426 |
} else { |
0dc104d51dce
PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents:
1041
diff
changeset
|
427 |
scr_LogPrint(LPRINT_LOGNORM, "GPGME encryption error: key not found"); |
0dc104d51dce
PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents:
1041
diff
changeset
|
428 |
err = 0; |
1041
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
429 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
430 |
if (err && err != GPG_ERR_CANCELED) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
431 |
scr_LogPrint(LPRINT_LOGNORM|LPRINT_NOTUTF8, |
1047
0dc104d51dce
PGP: Better error messages
Mikael Berthe <mikael@lilotux.net>
parents:
1041
diff
changeset
|
432 |
"GPGME encryption error: %s", gpgme_strerror(err)); |
1041
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
433 |
gpgme_release(ctx); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
434 |
edata = strip_header_footer(encrypted_data); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
435 |
if (encrypted_data) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
436 |
free(encrypted_data); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
437 |
return edata; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
438 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
439 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
440 |
// gpg_test_passphrase() |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
441 |
// Test the current gpg.passphrase with gpg.private_key. |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
442 |
// If the test doesn't succeed, the passphrase is cleared and a non-null |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
443 |
// value is returned. |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
444 |
int gpg_test_passphrase(void) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
445 |
{ |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
446 |
char *s; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
447 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
448 |
if (!gpg.private_key) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
449 |
return -1; // No private key... |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
450 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
451 |
s = gpg_sign("test"); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
452 |
if (s) { |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
453 |
free(s); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
454 |
return 0; // Ok, test successful |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
455 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
456 |
// The passphrase is wrong (if provided) |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
457 |
gpg_set_passphrase(NULL); |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
458 |
return -1; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
459 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
460 |
|
1413 | 461 |
int gpg_enabled(void) |
1041
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
462 |
{ |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
463 |
return gpg.enabled; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
464 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
465 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
466 |
#else /* not HAVE_GPGME */ |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
467 |
|
1413 | 468 |
int gpg_enabled(void) |
1041
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
469 |
{ |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
470 |
return 0; |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
471 |
} |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
472 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
473 |
#endif /* HAVE_GPGME */ |
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
474 |
|
d4b97a2423eb
Introduce PGP utility functions
Mikael Berthe <mikael@lilotux.net>
parents:
diff
changeset
|
475 |
/* vim: set expandtab cindent cinoptions=>2\:2(0: For Vim users... */ |